Power steering pump - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 12-13-2012, 09:59 AM   eBay Motors  #1 (permalink)
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Power steering pump

Just refilled the power steering fluid on my truck but the wheel is still hard to turn and it makes a wining noise on sharp corners
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Old 12-13-2012, 10:05 AM   eBay Motors  #2 (permalink)
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maybe pumps going out or need a good flush..... how's your breaking

Sent from my Moto 2500 Razormaxx
using my bean flickers
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Old 12-13-2012, 10:06 AM   eBay Motors  #3 (permalink)
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Few things will help that:

1) Flush the hydrobost / Power Steering system with synthetic fluid (amsoil, redline, etc)
2) Add a power steering cooler (GM P/N 10385584)
3) 3/8" magnafine filter between cooler and P/S pump return
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Old 12-13-2012, 02:12 PM   eBay Motors  #4 (permalink)
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The brakes are a little soft I topped off the power steering about two days ago it's still full so no leaks but a pain in the but to turn
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Old 12-13-2012, 04:57 PM   eBay Motors  #5 (permalink)
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Do the items I suggested above and if it still doesn't improve your P/S pump is probably toast.
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2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater
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Old 12-13-2012, 05:42 PM   eBay Motors  #6 (permalink)
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I got it working now my dad did some research and found that there's a valve in the pump that can stick. So I went and bought some of that Lucas power steering conditioner. Its smooth as butter now
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Old 12-13-2012, 06:05 PM   eBay Motors  #7 (permalink)
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The pressure valve sticks because the fluid overheats as mentioned above.
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Old 12-14-2012, 05:38 AM   eBay Motors  #8 (permalink)
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And it's blowing fluid again
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Old 12-14-2012, 05:58 AM   eBay Motors  #9 (permalink)
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Quote:
Originally Posted by Floridamax17 View Post
And it's blowing fluid again

........because it's overheating.
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2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater
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Old 12-14-2012, 05:23 PM   eBay Motors  #10 (permalink)
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Quote:
Originally Posted by Floridamax17 View Post
I got it working now my dad did some research and found that there's a valve in the pump that can stick. So I went and bought some of that Lucas power steering conditioner. Its smooth as butter now
I used Lucas as well, it improved it greatly and the slight noise I had is gone.
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